1913.] NATURAL SCIENCES OF PHILADELPHIA. 387 



which was described with the indefinite locality '' Africa" and has 

 not been recognized by subsequent authors, although Tryon has 

 called attention to its resemblance to veatchii, etc. Part of the 

 specimens (fig. 1, a, h, c) have a columellar tooth; some, as fig. 1,6, 

 have the coloration of Adams and Reeve's type figure in the Zoology 

 of the Samarang, pi. XVI, fig. 10. Others, fig. 1, a, have the pattern 

 shown by Reeve in the Conchologia Iconica. Still other examples 

 «how but faint traces of dark markings, fig. 1, c. With these there 

 were a few shells generally similai', but without the columellar tooth, 

 fig. 1, d, which by themselves would be referred to M. veatchii var. 

 No. 7, or with the tooth very weak, intergrading with the distinctly 

 dentate form. 



Fig. 1. — Micrarionta v. canescens (A. & R.), South Bay, Cerros Island. 



The Samarang surveyed from Japan to Borneo, going and return- 

 ing by the Cape route. They did not reach American shores, and 

 touched Africa only at the Cape, where no such species as H. 

 canescens is found. It seems to be one of several species without 

 definite locality which Reeve inserted. Captain Belcher who com- 

 manded the Samarang had previously explored Cerros Island in the 

 ■Sulphur, and probably he added H. canescens to the Samarang shells 

 from his former collection. 



By its columellar tooth M. canescens has affinity to M. levis. 

 Whether it will eventually be united to veatchii or to levis remains 

 to be decided, but it seems deserving of at least subspecific rank. 



Micrarionta levis (Pfeiffer). PI. XVI, figs. 48 to 52, 42 to 45. 



Helix levis Pfr., Zeitschrift fur Malakozoologie, II, 1845, p. 152; Syst. Conchyl. 

 Cabinet, p. 249, pi. 36, fig. 17, type, fig. 16, var. 



Original description. — "Shell perforate, globose, thin, smooth, 

 obliquely striate, obsoletely granulate, whitish, variously ornamented 

 with series of dots or pellucid corneous bands. Spire short, rather 

 acute. Whorls 5, but slightly convex, the last inflated. Aperture 

 rotund-lunar, colored like the outside or fulvous within; peristome 



